Download Precept en Installation Guide

Written by: RKP
1. Introduction
Checked by: AJC
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Thank you for purchasing the Precept
conventional fire detection and alarm equipment.
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The Precept range of panels have been designed
to meet the requirements of BSEN 54 Parts 2 & 4
and will provide the user with many years of reliable
service.
This document contains all the information
necessary for the installation, commissioning and
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maintenance of the Precept range of output
expansion panels. Installation and commissioning
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details for Precept fire detection and alarm panels
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are covered in the Precept manuals mentioned
below.
NOTE: It is important to read this manual fully
before commencing installation.
The following supporting documentation is also
available:
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 Precept
Output Expansion System
Application Guide
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 Precept Sales Literature
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 Precept Panel Application Guide
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 Precept User Manual
 Wiring Recommendations
2. Overview of Installation and
Commissioning
This section lists the steps that are taken in
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installing and commissioning a Precept output
expansion system.
1. Install all field wiring and equipment
 Refer to the Installation Guidelines in section
6.2 below
 Refer to the field device installation manuals
2. Install the panel
 Refer to the installation instructions in section
6.2 below
 Do not connect the field equipment at this
stage.
3. Commission the panel
 Refer to section 6.
3. Power Supplies
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The Precept
8 fire alarm panel utilises the
standard 230Vac 3A PSU fitted to the C1627
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motherboard. The Precept 16 Exp fire alarm panel
uses the C1652 230Vac 5A PSU mounted on the
internal chassis beneath the motherboard/output
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modules. Precept Exp 4 and 5 output expansion
panels are supplied with or without a C1652
230Vac 5A PSU depending on the output load
requirement. When fitted, the PSU is located on the
chassis underneath the output modules.
For all panels, the output voltage is adjustable from
25V to 28.2V via a small trimmer potentiometer on
the PCB. As the output voltage is factory set
however, adjustment should not be necessary.
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Details of the PSUs can be found in the Precept
manuals [Prec en inst.doc, Prec en app.doc]
Doc Number: Prec en Output exp mod installation & commissioning
Rev: 2 Page 3 of 23
23/12/09